Process the walnuts, garlic, breadcrumbs and 1/2 teaspoon sea salt in a food processor until finely chopped.,Add saba and 2 tablespoons warm water and process until the mixture forms a smooth.,paste, then, with the motor running, gradually add the olive oil until all the ingredients are well-combined.,Season to taste with freshly ground black pepper, transfer to a suitable serving bowl and serve with walnut bread or with your choice of crackers, breads and vegetable sticks.,Notes: The Italian condiment, saba, is made from concentrated grape must of trebbiano grapes.,______